1 /*
2 * drivers/net/bond/bond_netlink.c - Netlink interface for bonding
3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12 #include <linux/module.h>
13 #include <linux/errno.h>
14 #include <linux/netdevice.h>
15 #include <linux/etherdevice.h>
16 #include <linux/if_link.h>
17 #include <linux/if_ether.h>
18 #include <net/netlink.h>
19 #include <net/rtnetlink.h>
20 #include <net/bonding.h>
21
bond_get_slave_size(const struct net_device * bond_dev,const struct net_device * slave_dev)22 static size_t bond_get_slave_size(const struct net_device *bond_dev,
23 const struct net_device *slave_dev)
24 {
25 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_STATE */
26 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_MII_STATUS */
27 nla_total_size(sizeof(u32)) + /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */
28 nla_total_size(MAX_ADDR_LEN) + /* IFLA_BOND_SLAVE_PERM_HWADDR */
29 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_QUEUE_ID */
30 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
31 nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE */
32 nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE */
33 0;
34 }
35
bond_fill_slave_info(struct sk_buff * skb,const struct net_device * bond_dev,const struct net_device * slave_dev)36 static int bond_fill_slave_info(struct sk_buff *skb,
37 const struct net_device *bond_dev,
38 const struct net_device *slave_dev)
39 {
40 struct slave *slave = bond_slave_get_rtnl(slave_dev);
41
42 if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave)))
43 goto nla_put_failure;
44
45 if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link))
46 goto nla_put_failure;
47
48 if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT,
49 slave->link_failure_count))
50 goto nla_put_failure;
51
52 if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR,
53 slave_dev->addr_len, slave->perm_hwaddr))
54 goto nla_put_failure;
55
56 if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id))
57 goto nla_put_failure;
58
59 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
60 const struct aggregator *agg;
61 const struct port *ad_port;
62
63 ad_port = &SLAVE_AD_INFO(slave)->port;
64 agg = SLAVE_AD_INFO(slave)->port.aggregator;
65 if (agg) {
66 if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID,
67 agg->aggregator_identifier))
68 goto nla_put_failure;
69 if (nla_put_u8(skb,
70 IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE,
71 ad_port->actor_oper_port_state))
72 goto nla_put_failure;
73 if (nla_put_u16(skb,
74 IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE,
75 ad_port->partner_oper.port_state))
76 goto nla_put_failure;
77 }
78 }
79
80 return 0;
81
82 nla_put_failure:
83 return -EMSGSIZE;
84 }
85
86 static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
87 [IFLA_BOND_MODE] = { .type = NLA_U8 },
88 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },
89 [IFLA_BOND_MIIMON] = { .type = NLA_U32 },
90 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
91 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
92 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
93 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
94 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
95 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
96 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
97 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
98 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
99 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
100 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
101 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
102 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
103 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
104 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
105 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
106 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
107 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },
108 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },
109 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },
110 [IFLA_BOND_AD_ACTOR_SYS_PRIO] = { .type = NLA_U16 },
111 [IFLA_BOND_AD_USER_PORT_KEY] = { .type = NLA_U16 },
112 [IFLA_BOND_AD_ACTOR_SYSTEM] = { .type = NLA_BINARY,
113 .len = ETH_ALEN },
114 [IFLA_BOND_TLB_DYNAMIC_LB] = { .type = NLA_U8 },
115 };
116
117 static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = {
118 [IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 },
119 };
120
bond_validate(struct nlattr * tb[],struct nlattr * data[],struct netlink_ext_ack * extack)121 static int bond_validate(struct nlattr *tb[], struct nlattr *data[],
122 struct netlink_ext_ack *extack)
123 {
124 if (tb[IFLA_ADDRESS]) {
125 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
126 return -EINVAL;
127 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
128 return -EADDRNOTAVAIL;
129 }
130 return 0;
131 }
132
bond_slave_changelink(struct net_device * bond_dev,struct net_device * slave_dev,struct nlattr * tb[],struct nlattr * data[],struct netlink_ext_ack * extack)133 static int bond_slave_changelink(struct net_device *bond_dev,
134 struct net_device *slave_dev,
135 struct nlattr *tb[], struct nlattr *data[],
136 struct netlink_ext_ack *extack)
137 {
138 struct bonding *bond = netdev_priv(bond_dev);
139 struct bond_opt_value newval;
140 int err;
141
142 if (!data)
143 return 0;
144
145 if (data[IFLA_BOND_SLAVE_QUEUE_ID]) {
146 u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]);
147 char queue_id_str[IFNAMSIZ + 7];
148
149 /* queue_id option setting expects slave_name:queue_id */
150 snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n",
151 slave_dev->name, queue_id);
152 bond_opt_initstr(&newval, queue_id_str);
153 err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval);
154 if (err)
155 return err;
156 }
157
158 return 0;
159 }
160
bond_changelink(struct net_device * bond_dev,struct nlattr * tb[],struct nlattr * data[],struct netlink_ext_ack * extack)161 static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[],
162 struct nlattr *data[],
163 struct netlink_ext_ack *extack)
164 {
165 struct bonding *bond = netdev_priv(bond_dev);
166 struct bond_opt_value newval;
167 int miimon = 0;
168 int err;
169
170 if (!data)
171 return 0;
172
173 if (data[IFLA_BOND_MODE]) {
174 int mode = nla_get_u8(data[IFLA_BOND_MODE]);
175
176 bond_opt_initval(&newval, mode);
177 err = __bond_opt_set(bond, BOND_OPT_MODE, &newval);
178 if (err)
179 return err;
180 }
181 if (data[IFLA_BOND_ACTIVE_SLAVE]) {
182 int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
183 struct net_device *slave_dev;
184 char *active_slave = "";
185
186 if (ifindex != 0) {
187 slave_dev = __dev_get_by_index(dev_net(bond_dev),
188 ifindex);
189 if (!slave_dev)
190 return -ENODEV;
191 active_slave = slave_dev->name;
192 }
193 bond_opt_initstr(&newval, active_slave);
194 err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval);
195 if (err)
196 return err;
197 }
198 if (data[IFLA_BOND_MIIMON]) {
199 miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
200
201 bond_opt_initval(&newval, miimon);
202 err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval);
203 if (err)
204 return err;
205 }
206 if (data[IFLA_BOND_UPDELAY]) {
207 int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
208
209 bond_opt_initval(&newval, updelay);
210 err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval);
211 if (err)
212 return err;
213 }
214 if (data[IFLA_BOND_DOWNDELAY]) {
215 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
216
217 bond_opt_initval(&newval, downdelay);
218 err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
219 if (err)
220 return err;
221 }
222 if (data[IFLA_BOND_USE_CARRIER]) {
223 int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
224
225 bond_opt_initval(&newval, use_carrier);
226 err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval);
227 if (err)
228 return err;
229 }
230 if (data[IFLA_BOND_ARP_INTERVAL]) {
231 int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
232
233 if (arp_interval && miimon) {
234 netdev_err(bond->dev, "ARP monitoring cannot be used with MII monitoring\n");
235 return -EINVAL;
236 }
237
238 bond_opt_initval(&newval, arp_interval);
239 err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
240 if (err)
241 return err;
242 }
243 if (data[IFLA_BOND_ARP_IP_TARGET]) {
244 struct nlattr *attr;
245 int i = 0, rem;
246
247 bond_option_arp_ip_targets_clear(bond);
248 nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
249 __be32 target;
250
251 if (nla_len(attr) < sizeof(target))
252 return -EINVAL;
253
254 target = nla_get_be32(attr);
255
256 bond_opt_initval(&newval, (__force u64)target);
257 err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
258 &newval);
259 if (err)
260 break;
261 i++;
262 }
263 if (i == 0 && bond->params.arp_interval)
264 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
265 if (err)
266 return err;
267 }
268 if (data[IFLA_BOND_ARP_VALIDATE]) {
269 int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
270
271 if (arp_validate && miimon) {
272 netdev_err(bond->dev, "ARP validating cannot be used with MII monitoring\n");
273 return -EINVAL;
274 }
275
276 bond_opt_initval(&newval, arp_validate);
277 err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval);
278 if (err)
279 return err;
280 }
281 if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
282 int arp_all_targets =
283 nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
284
285 bond_opt_initval(&newval, arp_all_targets);
286 err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval);
287 if (err)
288 return err;
289 }
290 if (data[IFLA_BOND_PRIMARY]) {
291 int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
292 struct net_device *dev;
293 char *primary = "";
294
295 dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
296 if (dev)
297 primary = dev->name;
298
299 bond_opt_initstr(&newval, primary);
300 err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval);
301 if (err)
302 return err;
303 }
304 if (data[IFLA_BOND_PRIMARY_RESELECT]) {
305 int primary_reselect =
306 nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
307
308 bond_opt_initval(&newval, primary_reselect);
309 err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval);
310 if (err)
311 return err;
312 }
313 if (data[IFLA_BOND_FAIL_OVER_MAC]) {
314 int fail_over_mac =
315 nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
316
317 bond_opt_initval(&newval, fail_over_mac);
318 err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval);
319 if (err)
320 return err;
321 }
322 if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
323 int xmit_hash_policy =
324 nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
325
326 bond_opt_initval(&newval, xmit_hash_policy);
327 err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval);
328 if (err)
329 return err;
330 }
331 if (data[IFLA_BOND_RESEND_IGMP]) {
332 int resend_igmp =
333 nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
334
335 bond_opt_initval(&newval, resend_igmp);
336 err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval);
337 if (err)
338 return err;
339 }
340 if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
341 int num_peer_notif =
342 nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
343
344 bond_opt_initval(&newval, num_peer_notif);
345 err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval);
346 if (err)
347 return err;
348 }
349 if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
350 int all_slaves_active =
351 nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
352
353 bond_opt_initval(&newval, all_slaves_active);
354 err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval);
355 if (err)
356 return err;
357 }
358 if (data[IFLA_BOND_MIN_LINKS]) {
359 int min_links =
360 nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
361
362 bond_opt_initval(&newval, min_links);
363 err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval);
364 if (err)
365 return err;
366 }
367 if (data[IFLA_BOND_LP_INTERVAL]) {
368 int lp_interval =
369 nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
370
371 bond_opt_initval(&newval, lp_interval);
372 err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval);
373 if (err)
374 return err;
375 }
376 if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
377 int packets_per_slave =
378 nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
379
380 bond_opt_initval(&newval, packets_per_slave);
381 err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
382 if (err)
383 return err;
384 }
385 if (data[IFLA_BOND_AD_LACP_RATE]) {
386 int lacp_rate =
387 nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
388
389 bond_opt_initval(&newval, lacp_rate);
390 err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval);
391 if (err)
392 return err;
393 }
394 if (data[IFLA_BOND_AD_SELECT]) {
395 int ad_select =
396 nla_get_u8(data[IFLA_BOND_AD_SELECT]);
397
398 bond_opt_initval(&newval, ad_select);
399 err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval);
400 if (err)
401 return err;
402 }
403 if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) {
404 int actor_sys_prio =
405 nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]);
406
407 bond_opt_initval(&newval, actor_sys_prio);
408 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval);
409 if (err)
410 return err;
411 }
412 if (data[IFLA_BOND_AD_USER_PORT_KEY]) {
413 int port_key =
414 nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]);
415
416 bond_opt_initval(&newval, port_key);
417 err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval);
418 if (err)
419 return err;
420 }
421 if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) {
422 if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN)
423 return -EINVAL;
424
425 bond_opt_initval(&newval,
426 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM]));
427 err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval);
428 if (err)
429 return err;
430 }
431 if (data[IFLA_BOND_TLB_DYNAMIC_LB]) {
432 int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]);
433
434 bond_opt_initval(&newval, dynamic_lb);
435 err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval);
436 if (err)
437 return err;
438 }
439
440 return 0;
441 }
442
bond_newlink(struct net * src_net,struct net_device * bond_dev,struct nlattr * tb[],struct nlattr * data[],struct netlink_ext_ack * extack)443 static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
444 struct nlattr *tb[], struct nlattr *data[],
445 struct netlink_ext_ack *extack)
446 {
447 int err;
448
449 err = bond_changelink(bond_dev, tb, data, extack);
450 if (err < 0)
451 return err;
452
453 err = register_netdevice(bond_dev);
454
455 netif_carrier_off(bond_dev);
456 if (!err) {
457 struct bonding *bond = netdev_priv(bond_dev);
458
459 bond_work_init_all(bond);
460 }
461
462 return err;
463 }
464
bond_get_size(const struct net_device * bond_dev)465 static size_t bond_get_size(const struct net_device *bond_dev)
466 {
467 return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */
468 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */
469 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */
470 nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */
471 nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */
472 nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */
473 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */
474 /* IFLA_BOND_ARP_IP_TARGET */
475 nla_total_size(sizeof(struct nlattr)) +
476 nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
477 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */
478 nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */
479 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */
480 nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */
481 nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */
482 nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */
483 nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */
484 nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */
485 nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */
486 nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */
487 nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */
488 nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */
489 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */
490 nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */
491 nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
492 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
493 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
494 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
495 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
496 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
497 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */
498 nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */
499 nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */
500 nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */
501 0;
502 }
503
bond_option_active_slave_get_ifindex(struct bonding * bond)504 static int bond_option_active_slave_get_ifindex(struct bonding *bond)
505 {
506 const struct net_device *slave;
507 int ifindex;
508
509 rcu_read_lock();
510 slave = bond_option_active_slave_get_rcu(bond);
511 ifindex = slave ? slave->ifindex : 0;
512 rcu_read_unlock();
513 return ifindex;
514 }
515
bond_fill_info(struct sk_buff * skb,const struct net_device * bond_dev)516 static int bond_fill_info(struct sk_buff *skb,
517 const struct net_device *bond_dev)
518 {
519 struct bonding *bond = netdev_priv(bond_dev);
520 unsigned int packets_per_slave;
521 int ifindex, i, targets_added;
522 struct nlattr *targets;
523 struct slave *primary;
524
525 if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
526 goto nla_put_failure;
527
528 ifindex = bond_option_active_slave_get_ifindex(bond);
529 if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))
530 goto nla_put_failure;
531
532 if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
533 goto nla_put_failure;
534
535 if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
536 bond->params.updelay * bond->params.miimon))
537 goto nla_put_failure;
538
539 if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
540 bond->params.downdelay * bond->params.miimon))
541 goto nla_put_failure;
542
543 if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
544 goto nla_put_failure;
545
546 if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
547 goto nla_put_failure;
548
549 targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
550 if (!targets)
551 goto nla_put_failure;
552
553 targets_added = 0;
554 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
555 if (bond->params.arp_targets[i]) {
556 if (nla_put_be32(skb, i, bond->params.arp_targets[i]))
557 goto nla_put_failure;
558 targets_added = 1;
559 }
560 }
561
562 if (targets_added)
563 nla_nest_end(skb, targets);
564 else
565 nla_nest_cancel(skb, targets);
566
567 if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
568 goto nla_put_failure;
569
570 if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
571 bond->params.arp_all_targets))
572 goto nla_put_failure;
573
574 primary = rtnl_dereference(bond->primary_slave);
575 if (primary &&
576 nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex))
577 goto nla_put_failure;
578
579 if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
580 bond->params.primary_reselect))
581 goto nla_put_failure;
582
583 if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
584 bond->params.fail_over_mac))
585 goto nla_put_failure;
586
587 if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
588 bond->params.xmit_policy))
589 goto nla_put_failure;
590
591 if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
592 bond->params.resend_igmp))
593 goto nla_put_failure;
594
595 if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
596 bond->params.num_peer_notif))
597 goto nla_put_failure;
598
599 if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
600 bond->params.all_slaves_active))
601 goto nla_put_failure;
602
603 if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
604 bond->params.min_links))
605 goto nla_put_failure;
606
607 if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
608 bond->params.lp_interval))
609 goto nla_put_failure;
610
611 packets_per_slave = bond->params.packets_per_slave;
612 if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
613 packets_per_slave))
614 goto nla_put_failure;
615
616 if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
617 bond->params.lacp_fast))
618 goto nla_put_failure;
619
620 if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
621 bond->params.ad_select))
622 goto nla_put_failure;
623
624 if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB,
625 bond->params.tlb_dynamic_lb))
626 goto nla_put_failure;
627
628 if (BOND_MODE(bond) == BOND_MODE_8023AD) {
629 struct ad_info info;
630
631 if (capable(CAP_NET_ADMIN)) {
632 if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO,
633 bond->params.ad_actor_sys_prio))
634 goto nla_put_failure;
635
636 if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY,
637 bond->params.ad_user_port_key))
638 goto nla_put_failure;
639
640 if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM,
641 sizeof(bond->params.ad_actor_system),
642 &bond->params.ad_actor_system))
643 goto nla_put_failure;
644 }
645 if (!bond_3ad_get_active_agg_info(bond, &info)) {
646 struct nlattr *nest;
647
648 nest = nla_nest_start(skb, IFLA_BOND_AD_INFO);
649 if (!nest)
650 goto nla_put_failure;
651
652 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
653 info.aggregator_id))
654 goto nla_put_failure;
655 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
656 info.ports))
657 goto nla_put_failure;
658 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
659 info.actor_key))
660 goto nla_put_failure;
661 if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
662 info.partner_key))
663 goto nla_put_failure;
664 if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
665 sizeof(info.partner_system),
666 &info.partner_system))
667 goto nla_put_failure;
668
669 nla_nest_end(skb, nest);
670 }
671 }
672
673 return 0;
674
675 nla_put_failure:
676 return -EMSGSIZE;
677 }
678
679 struct rtnl_link_ops bond_link_ops __read_mostly = {
680 .kind = "bond",
681 .priv_size = sizeof(struct bonding),
682 .setup = bond_setup,
683 .maxtype = IFLA_BOND_MAX,
684 .policy = bond_policy,
685 .validate = bond_validate,
686 .newlink = bond_newlink,
687 .changelink = bond_changelink,
688 .get_size = bond_get_size,
689 .fill_info = bond_fill_info,
690 .get_num_tx_queues = bond_get_num_tx_queues,
691 .get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number
692 as for TX queues */
693 .slave_maxtype = IFLA_BOND_SLAVE_MAX,
694 .slave_policy = bond_slave_policy,
695 .slave_changelink = bond_slave_changelink,
696 .get_slave_size = bond_get_slave_size,
697 .fill_slave_info = bond_fill_slave_info,
698 };
699
bond_netlink_init(void)700 int __init bond_netlink_init(void)
701 {
702 return rtnl_link_register(&bond_link_ops);
703 }
704
bond_netlink_fini(void)705 void bond_netlink_fini(void)
706 {
707 rtnl_link_unregister(&bond_link_ops);
708 }
709
710 MODULE_ALIAS_RTNL_LINK("bond");
711
